Starting over?

Roxy's two-day visit has given us a bit of a setback. You can see it in her eyes. The sadness is back. She is not as trusting as she was. I feel like she's regressed to where she was about one month into the fostering. She has quit sleeping on my bed--or even coming to visit me in the early morning hours. She won't jump on the couch or stay on the couch if I put her on it. She won't sit by me when I sit on the couch. She just self-crates.

Part of it is likely the heartworm treatment and how she feels, but it makes me sad to think that's she's lost some of that comfort level she had. I know patience and consistency will bring her back to the point she was before, but it saddens me that we've lost the gains we've made with her. She deserves nothing but happiness in her life.